Thrust Spherical Roller Bearings
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Thrust Spherical Roller Bearings
In spherical roller thrust bearings the load is transmitted from one raceway to the other at an angle to the bearing axis. They can accommodate radial loads in addition to the acting axial loads. They are self-aligning making them insensitive to shaft deflection and misalignment of the shaft. Some bearing arrangements have a number of asymmetrical rollers. They can support very heavy axial loads and allow high-speed operation.
Some bearings have a pressed steel window-type cage, which, with the rollers, forms a non-separable assembly with the shaft washer. All other bearings have a machined brass or steel cage guided by a sleeve held in the shaft washer bore. The shaft washer and cage with rollers form a non-separable unit.
Dimensions - The boundary dimensions of spherical roller thrust bearings are in accordance with ISO.
Tolerance - Spherical roller thrust bearings are produced as standard to Normal tolerances. Depending on bearing size, the tolerances for the total height of standard bearings may be 20 to 50 % and for Explorer bearings are up to 70 % tighter than specified by ISO.
Misalignment
Spherical roller thrust ball bearings are self-aligning. They tolerate misalignment of the shaft relative to the housing, and shaft deflections during operation. The permissible misalignment is reduced as the load increases.
Rotary table
Pillow block